Edit: I guess you were talking about the original 5d. Why would technology advances nt apply? Of course thy do. Sensors tech is always getting better if tech is similar, sensor size makes a difference.

Thank you. As we have said the technology of the sensor matters. It is possible to make an m43 sensor that works as well as a FF sensor...and also possible to have a FF sensor be vastly netter than an m43 sensor. It all depends on the tech behind the sensors which is never the same.